At some point your best friend will betray you they will lie maybe they will even tell your deepest secrets to your worst enemy. Maybe they will start being critical about everything you do. Plus never rely on only one person they can also let you down sometimes. Sure you'll probably make up but will it ever be the same.
Not likely of course some friendship will last forever if you're in one of those precious friendship. Hold on to your friendship forever and ever.She or he is definitely one worth keeping. Never in life trust or depend on only 1 friend